package ooday01Exercise;

public class consDemo {
    public static void main(String[] args) {
        Student zs=new Student();//无参的传默认值
        Student ls=new Student("ls",24);
        Student ww=new Student("ww",26,"jsd2302","001");

        zs.sayHi();
        ls.sayHi();
        ww.sayHi();


    }
}
